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3.5.99.6: glucosamine-6-phosphate deaminase

This is an abbreviated version!
For detailed information about glucosamine-6-phosphate deaminase, go to the full flat file.

Word Map on EC 3.5.99.6

Reaction

alpha-D-glucosamine 6-phosphate
+
H2O
=
D-fructose 6-phosphate
+
NH3

Synonyms

2-amino-2-deoxy-D-glucose-6-phosphate aminohydrolase (ketol-isomerizing), 2-amino-2-deoxy-D-glucose-6-phosphate ketol isomerase (deaminating), aminodeoxyglucosephosphate isomerase, cGNPDA2-a, cGNPDA2-b, cGNPDA2-c, cGNPDA2-d, EC 5.3.1.10, GlcN-6-P isomerase, GlcN6P deaminase, glucosamine 6-phosphate deaminase, glucosamine 6-phosphate isomerase, glucosamine phosphate deaminase, glucosamine-6-phosphate deaminase, glucosamine-6-phosphate deaminase 1, glucosamine-6-phosphate deaminase 2, glucosamine-6-phosphate deaminase 2 isoform 2, glucosamine-6-phosphate deaminase 2 isoform 3, glucosamine-6-phosphate isomerase, glucosamine-6P deaminase, glucosamine-P isomerase, glucosaminephosphate isomerase, gnd, GNPDA, GNPDA1, GNPDA2, isomerase, glucosamine phosphate, More, NAG1, NagB, NagBBs, NagBEc, oscillin, phoshoglucosamine isomerase, phosphoglucosaminisomerase, SMU.636 protein

ECTree

     3 Hydrolases
         3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
             3.5.99 In other compounds
                3.5.99.6 glucosamine-6-phosphate deaminase

pH Range

pH Range on EC 3.5.99.6 - glucosamine-6-phosphate deaminase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6 - 10
-
pH-profile, overview
6 - 8.5
-
pH 6.0: about 25% of maximal activity, pH 8.5: about 60% of maximal activity
6 - 9
the pH dependency of NagB with a standard concentration of GlcNAc-6P, the kcat does not vary between pH 6.0 and pH 9.0. The Hill coefficient changes substantially with an optimum at pH 7.7 (Hill coefficient of 2.6), dropping below pH 7.0 or above pH 8.8. Results obtained at different pH values (pH 8.0, 7.8, 7.5, and 6.8) are in agreement with this statement
6.2 - 8
-
pH 6.2: about 25% of maximal activity, pH 8.0: about 55% of maximal activity, in presence of glucose 6-phosphate
6.8 - 8.3
-
70% of maximal activity at pH 6.8, maximal activity at pH 8.3
7 - 9.5
-
pH 7.0: about 55% of maximal activity, pH 9.5: about 74% of maximal activity
additional information